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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et cindent: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "MockNetworkLayer.h"
#include "MockNetworkLayerController.h"
#include "nsSocketTransportService2.h"
#include "prmem.h"
#include "prio.h"
namespace mozilla::net {
static PRDescIdentity sMockNetworkLayerIdentity;
static PRIOMethods sMockNetworkLayeyMethods;
static PRIOMethods* sMockNetworkLayeyMethodsPtr = nullptr;
// Not used for now.
class MockNetworkSecret {
public:
MockNetworkSecret() = default;
};
static PRStatus MockNetworkConnect(PRFileDesc* fd, const PRNetAddr* addr,
PRIntervalTime to) {
PRStatus status;
mozilla::net::NetAddr netAddr(addr);
MockNetworkSecret* secret = reinterpret_cast<MockNetworkSecret*>(fd->secret);
nsAutoCString addrPort;
netAddr.ToAddrPortString(addrPort);
SOCKET_LOG(
("MockNetworkConnect %p connect to [%s]\n", secret, addrPort.get()));
mozilla::net::NetAddr redirected;
if (FindNetAddrOverride(netAddr, redirected)) {
redirected.ToAddrPortString(addrPort);
SOCKET_LOG(
("MockNetworkConnect %p redirect to [%s]\n", secret, addrPort.get()));
PRNetAddr prAddr;
NetAddrToPRNetAddr(&redirected, &prAddr);
status = fd->lower->methods->connect(fd->lower, &prAddr, to);
} else {
status = fd->lower->methods->connect(fd->lower, addr, to);
}
return status;
}
static PRInt32 MockNetworkSend(PRFileDesc* fd, const void* buf, PRInt32 amount,
PRIntn flags, PRIntervalTime timeout) {
MOZ_RELEASE_ASSERT(fd->identity == sMockNetworkLayerIdentity);
MockNetworkSecret* secret = reinterpret_cast<MockNetworkSecret*>(fd->secret);
SOCKET_LOG(("MockNetworkSend %p\n", secret));
PRInt32 rv =
(fd->lower->methods->send)(fd->lower, buf, amount, flags, timeout);
return rv;
}
static PRInt32 MockNetworkWrite(PRFileDesc* fd, const void* buf,
PRInt32 amount) {
return MockNetworkSend(fd, buf, amount, 0, PR_INTERVAL_NO_WAIT);
}
static PRInt32 MockNetworkRecv(PRFileDesc* fd, void* buf, PRInt32 amount,
PRIntn flags, PRIntervalTime timeout) {
MOZ_RELEASE_ASSERT(fd->identity == sMockNetworkLayerIdentity);
MockNetworkSecret* secret = reinterpret_cast<MockNetworkSecret*>(fd->secret);
SOCKET_LOG(("MockNetworkRecv %p\n", secret));
PRInt32 rv =
(fd->lower->methods->recv)(fd->lower, buf, amount, flags, timeout);
return rv;
}
static PRInt32 MockNetworkRead(PRFileDesc* fd, void* buf, PRInt32 amount) {
return MockNetworkRecv(fd, buf, amount, 0, PR_INTERVAL_NO_WAIT);
}
static PRStatus MockNetworkClose(PRFileDesc* fd) {
if (!fd) {
return PR_FAILURE;
}
PRFileDesc* layer = PR_PopIOLayer(fd, PR_TOP_IO_LAYER);
MOZ_RELEASE_ASSERT(layer && layer->identity == sMockNetworkLayerIdentity,
"MockNetwork Layer not on top of stack");
MockNetworkSecret* secret =
reinterpret_cast<MockNetworkSecret*>(layer->secret);
SOCKET_LOG(("MockNetworkClose %p\n", secret));
layer->secret = nullptr;
layer->dtor(layer);
delete secret;
return fd->methods->close(fd);
}
static PRInt32 MockNetworkSendTo(PRFileDesc* fd, const void* buf,
PRInt32 amount, PRIntn flags,
const PRNetAddr* addr,
PRIntervalTime timeout) {
MOZ_RELEASE_ASSERT(fd->identity == sMockNetworkLayerIdentity);
MockNetworkSecret* secret = reinterpret_cast<MockNetworkSecret*>(fd->secret);
SOCKET_LOG(("MockNetworkSendTo %p", secret));
mozilla::net::NetAddr netAddr(addr);
if (FindBlockedUDPAddr(netAddr)) {
nsAutoCString addrPort;
netAddr.ToAddrPortString(addrPort);
SOCKET_LOG(
("MockNetworkSendTo %p addr [%s] is blocked", secret, addrPort.get()));
return PR_SUCCESS;
}
return (fd->lower->methods->sendto)(fd->lower, buf, amount, flags, addr,
timeout);
}
static PRInt32 PR_CALLBACK MockNetworkRecvFrom(PRFileDesc* fd, void* buf,
PRInt32 amount, PRIntn flags,
PRNetAddr* addr,
PRIntervalTime timeout) {
MOZ_RELEASE_ASSERT(fd->identity == sMockNetworkLayerIdentity);
MockNetworkSecret* secret = reinterpret_cast<MockNetworkSecret*>(fd->secret);
SOCKET_LOG(("MockNetworkRecvFrom %p\n", secret));
mozilla::net::NetAddr netAddr(addr);
if (FindBlockedUDPAddr(netAddr)) {
nsAutoCString addrPort;
netAddr.ToAddrPortString(addrPort);
SOCKET_LOG(("MockNetworkRecvFrom %p addr [%s] is blocked", secret,
addrPort.get()));
return PR_SUCCESS;
}
return (fd->lower->methods->recvfrom)(fd->lower, buf, amount, flags, addr,
timeout);
}
nsresult AttachMockNetworkLayer(PRFileDesc* fd) {
if (!sMockNetworkLayeyMethodsPtr) {
sMockNetworkLayerIdentity = PR_GetUniqueIdentity("MockNetwork Layer");
sMockNetworkLayeyMethods = *PR_GetDefaultIOMethods();
sMockNetworkLayeyMethods.connect = MockNetworkConnect;
sMockNetworkLayeyMethods.send = MockNetworkSend;
sMockNetworkLayeyMethods.write = MockNetworkWrite;
sMockNetworkLayeyMethods.recv = MockNetworkRecv;
sMockNetworkLayeyMethods.read = MockNetworkRead;
sMockNetworkLayeyMethods.close = MockNetworkClose;
sMockNetworkLayeyMethods.sendto = MockNetworkSendTo;
sMockNetworkLayeyMethods.recvfrom = MockNetworkRecvFrom;
sMockNetworkLayeyMethodsPtr = &sMockNetworkLayeyMethods;
}
PRFileDesc* layer = PR_CreateIOLayerStub(sMockNetworkLayerIdentity,
sMockNetworkLayeyMethodsPtr);
if (!layer) {
return NS_ERROR_FAILURE;
}
MockNetworkSecret* secret = new MockNetworkSecret();
layer->secret = reinterpret_cast<PRFilePrivate*>(secret);
PRStatus status = PR_PushIOLayer(fd, PR_NSPR_IO_LAYER, layer);
if (status == PR_FAILURE) {
delete secret;
PR_Free(layer); // PR_CreateIOLayerStub() uses PR_Malloc().
return NS_ERROR_FAILURE;
}
return NS_OK;
}
} // namespace mozilla::net
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